hi there Andriuseu, that's a great question, well, cannabis is photosensitive, that means that it's all about the light hours. it's not so much about inside the greenhouse or outside the garden, it's more about which lattitude you are on earth and when the sun sets by season. normally you would plant much earlier like in april and have huge plants by september or august , for a harvest in october (in europe) , other places have 6am to 6pm sun rise sun set daily all year. It really depends where you're growing. One way to check is go to the weather channel where you're from and see where in the year you have 12/12 sunlight . that will be when. Could be any time from august to october basically, it also depends what you're planting, some are earlier some are later. Hope this helps ! 🚀